
Toggl
Rize
Clockify
Harvest
Chronoscope
DeskTime
ActivityWatch
Clockk AI-powered time tracking for freelancers & agencies ⏰🔥💰

NiftyImages
OpenAlternative
MailChimp
Postmark
Movable Ink
Momen
Brevo
Real-time, open-time content for email: countdown timers, dynamic images, live product picks, geo-targeted maps, one-click surveys, and scratch-card rewards. No code, no ESP integration, rendered fresh every time someone opens.

Which is more popular?
Based on our record, Clockk seems to be more popular. It has been mentioned 3 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | clockk.com | alterable.com |
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| Company | — | Startup from the United States · 1 - 9 employees |
| Listed in |
In their own words, as submitted to SaaSHub.


Clockk is an AI powered (automatic) time tracking app. Instead of timers, Clockk runs in the background, automatically tracking what you're working on and for how long. Clockk uses AI to automatically assign your work to the right project/client. No start/stop timers to constantly monitor Focus...
Alterable adds real-time, open-time content to email campaigns, no coding, no ESP integration, no resends. Every asset is a single image URL that renders fresh the moment a subscriber opens the message, not the moment you hit send. Countdown timers count down live in the inbox. Choose a fixed...
What each product offers, as listed by its team.


Possible disadvantages
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Clockk and Alterable.
Alterable's answer:
Most tools in this space (NiftyImages, Sendtric, MotionMail, CountdownMail) do one thing well, usually just countdown timers. Alterable is a single platform for six distinct open-time content types, timers, dynamic images, live product data, geo-targeted maps, surveys, and scratch-card rewards, all rendered the same way: one image tag, no ESP integration, no JavaScript.
That "just an image" approach is also what makes it universal: it works in every major email client without exception, since there's nothing for Outlook or Gmail to selectively support or block.
The rules engine is shared across all six content types too. The same conditions (location, weather, device, time of day, stock level) that pick a dynamic image can pick a product, a map location, or a timer variant, so teams build a targeting logic once and reuse it everywhere instead of learning a separate tool per feature.
Alterable's answer:
Against single-purpose timer tools (Sendtric, CountdownMail, MotionMail, CountingDownTo): those platforms do one thing, a countdown widget. Alterable includes countdown timers plus dynamic images, live product data, geo-targeted maps, surveys, and scratch cards, on one account, with one shared rules engine. If a team outgrows "just a timer," there's no second tool to adopt.
Against broader personalization platforms (NiftyImages, Movable Ink): Alterable is free to start with no credit card, and every asset is a plain image tag rather than requiring a native ESP integration or account connection. That keeps setup to minutes and means it works identically across Klaviyo, Mailchimp, HubSpot, GetResponse, or any of 50+ platforms, with no per-ESP configuration to maintain.
Because it's "just an image": there's no JavaScript, no AMP, no interactive-email fallback logic to write or test. It renders the same way in Outlook as it does in Gmail, which is where more elaborate interactive approaches usually break first.
Share your experience with using Clockk and Alterable. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Clockk has supported apps, which give Clockk the ability to extract details from the applications you’re using to determine different projects within the same app. Let’s say you’re a bookkeeper using Quickbooks for a...
The main difference between the two is that timeBro has one tracker to install on your computer and Clockk has two trackers (desktop app and browser extension) and supported apps. These two trackers help get more...
There is also a free version of Clockk (Clockk Express). Clockk Express is a daily email that shows you what you worked on and for how long.
We have no reviews of Alterable yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


I want to introduce you to Clockk! Automatic time tracking app that runs in the background and tracks what you're working on. Be more productive by being aware of where you're spending your time. Source: about 4 years ago
Check out https://clockk.com/ for an easy and accurate way to track your time. Gain insight on how you are using your time to help make business decisions and easily keep track of billable hours for multiple clients! Source: about 4 years ago
Hey you might be interested in https://clockk.com/ ! Automatic time tracking that separates your work based on project/client :). Source: over 4 years ago
Tracking Alterable since Feb 2022.
When comparing Clockk and Alterable, you can also consider the following products.

Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
Compare Toggl to Clockk or Alterable:

NiftyImages is a tool to engage clients with personalized images and countdown timers for email.
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Discover Open Source Alternatives to Popular Software
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Simple and free time tracker. Perfect for small and mid-sized businesses as well as freelancers. Unlimited projects and users, unlimited productivity. Get all the premium functionalities, completely free.
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MailChimp is the best way to design, send, and share email newsletters.
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